biology vs polymorphous

biology is a noun but polymorphous is not a noun.

Word	Noun	Adjective	Verb	Adverb
biology	Yes	No	No	No
polymorphous	No	Yes	No	No

biology (noun)	polymorphous (noun)
the science that studies living organisms
all the plant and animal life of a particular region
characteristic life processes and phenomena of living organisms

biology (adjective)	polymorphous (adjective)
	relating to the occurrence of more than one kind of individual (independent of sexual differences) in an interbreeding population
	relating to the crystallization of a compound in two or more different forms
	having or occurring in several distinct forms